1 /**
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License
15  */
16 
17 package com.android.phone;
18 
19 import android.app.ActionBar;
20 import android.content.Context;
21 import android.content.Intent;
22 import android.content.res.Resources;
23 import android.telephony.SubscriptionInfo;
24 import android.telephony.SubscriptionManager;
25 import android.telephony.TelephonyManager;
26 import android.text.TextUtils;
27 
28 import com.android.phone.PhoneGlobals;
29 import com.android.internal.telephony.Phone;
30 import com.android.internal.telephony.PhoneFactory;
31 
32 /**
33  * Helper for manipulating intents or components with subscription-related information.
34  *
35  * In settings, subscription ids and labels are passed along to indicate that settings
36  * are being changed for particular subscriptions. This helper provides functions for
37  * helping extract this info and perform common operations using this info.
38  */
39 public class SubscriptionInfoHelper {
40     public static final int NO_SUB_ID = -1;
41 
42     // Extra on intent containing the id of a subscription.
43     public static final String SUB_ID_EXTRA =
44             "com.android.phone.settings.SubscriptionInfoHelper.SubscriptionId";
45     // Extra on intent containing the label of a subscription.
46     private static final String SUB_LABEL_EXTRA =
47             "com.android.phone.settings.SubscriptionInfoHelper.SubscriptionLabel";
48 
49     private static Context mContext;
50 
51     private static int mSubId = NO_SUB_ID;
52     private static String mSubLabel;
53 
54     /**
55      * Instantiates the helper, by extracting the subscription id and label from the intent.
56      */
SubscriptionInfoHelper(Context context, Intent intent)57     public SubscriptionInfoHelper(Context context, Intent intent) {
58         mContext = context;
59         mSubId = intent.getIntExtra(SUB_ID_EXTRA, NO_SUB_ID);
60         mSubLabel = intent.getStringExtra(SUB_LABEL_EXTRA);
61     }
62 
63     /**
64      * @param newActivityClass The class of the activity for the intent to start.
65      * @return Intent containing extras for the subscription id and label if they exist.
66      */
getIntent(Class newActivityClass)67     public Intent getIntent(Class newActivityClass) {
68         Intent intent = new Intent(mContext, newActivityClass);
69 
70         if (hasSubId()) {
71             intent.putExtra(SUB_ID_EXTRA, mSubId);
72         }
73 
74         if (!TextUtils.isEmpty(mSubLabel)) {
75             intent.putExtra(SUB_LABEL_EXTRA, mSubLabel);
76         }
77 
78         return intent;
79     }
80 
addExtrasToIntent(Intent intent, SubscriptionInfo subscription)81     public static void addExtrasToIntent(Intent intent, SubscriptionInfo subscription) {
82         if (subscription == null) {
83             return;
84         }
85 
86         intent.putExtra(SubscriptionInfoHelper.SUB_ID_EXTRA, subscription.getSubscriptionId());
87         intent.putExtra(
88                 SubscriptionInfoHelper.SUB_LABEL_EXTRA, subscription.getDisplayName().toString());
89     }
90 
91     /**
92      * @return Phone object. If a subscription id exists, it returns the phone for the id.
93      */
getPhone()94     public Phone getPhone() {
95         return hasSubId()
96                 ? PhoneFactory.getPhone(SubscriptionManager.getPhoneId(mSubId))
97                 : PhoneGlobals.getPhone();
98     }
99 
100     /**
101      * Sets the action bar title to the string specified by the given resource id, formatting
102      * it with the subscription label. This assumes the resource string is formattable with a
103      * string-type specifier.
104      *
105      * If the subscription label does not exists, leave the existing title.
106      */
setActionBarTitle(ActionBar actionBar, Resources res, int resId)107     public void setActionBarTitle(ActionBar actionBar, Resources res, int resId) {
108         if (actionBar == null || TextUtils.isEmpty(mSubLabel)) {
109             return;
110         }
111 
112         if (!TelephonyManager.from(mContext).isMultiSimEnabled()) {
113             return;
114         }
115 
116         String title = String.format(res.getString(resId), mSubLabel);
117         actionBar.setTitle(title);
118     }
119 
hasSubId()120     public boolean hasSubId() {
121         return mSubId != NO_SUB_ID;
122     }
123 
getSubId()124     public int getSubId() {
125         return mSubId;
126     }
127 }
128